US3301328A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well stimulation
Assignee: ExxonMobil Upstream Research Co
•
Filing: 1963-11-01
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Granted: 1967-01-31
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Expires: 1983-11-01
Abstract
No abstract record available.
Inventors
- 👤 Francis E Campion
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:37
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; C09K8/584; Y; Y10; Y10S; Y10S507/00; Y10S507/935; Y10S507/936
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A METHOD FOR TREATING A SUBTERRANEAN OIL-BEARING FORMATION SURROUNDING A WELLBORE WHICH COMPRISES INJECTING INTO SAID FORMATION THROUGH SAID WELLBORE A SOLVENT CONTAINING FROM ABOUT 0.01 TO ABOUT 5 PERCENT BY VOLUME OF A MIXTURE OF FROM ABOUT 50 TO 70 PERCENT BY VOLUME OF AN ALKALI METAL SALT OF A DIESTER OF SULFOSUCCINIC ACID HAVING C8 ALIPHATIC ESTER GROUPS, FROM ABOUT 20 TO ABOUT 40 PERCENT BY VOLUME OF AN ALKALI METAL SALT OF A DIESTER OF SULFOSUCCINIC ACID HAVING C6 ALIPHATIC ESTER GROUPS, AND FROM ABOUT 5 TO ABOUT 20 PERCENT BY VOLUME OF A LONG CHAIN SUBSTITUTED POLYETHYLENEOXYETHANOL HAVING THE FORMULA R(C6H4)YO(CH2CH2O)ZCH2CH2OH, WHERE R IS AN ALIPHATIC GROUP CONTAINING X CARBON ATOMS, X IS AN INTEGER FROM 7 TO 21, Y IS 0 OR 1, Z IS AN INTEGER FROM 6 TO 28, AND 0.475X-0.33(Z+1)=0.4 TO 1.4.
Claim 2
Independent Claim
140 words
A METHOD FOR TREATING A SUBTERRANEAN OIL-BEARING FORMATION SURROUNDING A WELLBORE WHICH COMPRISES INJECTING INTO SAID FORMATION THROUGH SAID WELLBORE A SOLVENT CONTAINING FROM ABOUT 0.01 TO ABOUT 5 PERCENT BY VOLUME OF A MIXTURE OF FROM ABOUT 50 TO 70 PERCENT BY VOLUME OF AN ALKALI METAL SALT OF A DIESTER OF SULFOSUCCINIC ACID HAVING C8 ALIPHATIC ESTER GROUPS, FROM ABOUT 20 TO ABOUT 40 PERCENT BY VOLUME OF AN ALKALI METAL SALT OF A DIESTER OF SULFOSUCCINIC ACID HAVING C6 ALIPHATIC ESTER GROUPS, AND FROM ABOUT 5 TO ABOUT 20 PERCENT BY VOLUME OF A LONG CHAIN SUBSTITUTED POLYETHYLENEOXYETHANOL HAVING THE FORMULA R(C6H4)YO(CH2CH2O)ZCH2CH2OH, WHERE R IS AN ALIPHATIC GROUP CONTAINING X CARBON ATOMS, X IS AN INTEGER FROM 7 TO 21, Y IS 0 OR 1, Z IS AN INTEGER FROM 6 TO 28, AND 0.475X-0.33(Z+1)=0.4 TO 1.4.
References Cited (Backward Citations)
US2978409A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |